I am using the ULD 15 S2 w/ my 1050. I got a splitter for the LFE and put it into the left and right inputs. Everything works great. The subwoofer is heavy compared to the rest of my components (axiom m22's etc.) and I keep the gain b/n 10 and 20 on the subwoofer to balance everything out.

Hope it all worked out!

Matt